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Frigidaire FRS18PYW20 Defrost Sensor Board
The defrost control board instructs the system to activate an important defrosting cycle which assists to continue normal heating and cooling operations. The board is relayed information from a defrost sensor located in the outdoor unit to determine when the defrost cycle should begin.
What signals that my AC defrost sensor board is not working properly?
- The HVAC system control board could signify an error code if the defrost control board fails
- The system will end up not running due to way too much frost build-up
- Defrost mode has not run for quite some time even though there is quite a bit frost on the outdoor unit
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